For the given measurement, briefly describe any likely sources of random error and any likely sources of systematic error.According to police reports, attendance at the last three anti-war rallies was 45,000, 60,000, and 22,300 respectively.
What will be an ideal response?
Answers may vary. Possible answer
Sources of random error:
Difficulties in exactly measuring the size of a large crowd which is constantly moving and fluctuating in size, will result in random error.
Systematic error:
Police may tend to consistently underreport attendance at rallies for political reasons.
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A. 9 hundred thousands B. 9 thousands C. 9 ten thousands D. 9 hundreds
A pair of similar triangles is given. Write the corresponding angles and the ratios of the corresponding sides.
A. ?L ? ?P
?M ? ?R
?N ? ?Q
= 
= 
B. ?L ? ?P
?M ? ?Q
?N ? ?R
= 
= 
C. ?L ? ?P
?M ? ?R
?N ? ?Q
= 
= 
D. ?L ? ?P
?M ? ?Q
?N ? ?R
= 
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A. [-5, -1)
B. (1, 5]
C. [1, 5)
D. (-5, -1]
The number of desks in one row is 
. How many desks are there in a room of 
rows if they are arranged in a rectangular arrangement?
?
A. 
B. 
C. 
D. 
E. 